This is a slightly different kind of light leak. It's angular in nature due to the glass prism used in place of a lens during the filming.
I was finding that I was often using the light leaks as an alpha channel to add moving interest to a backdrop - or as a wipe. Yet I was missing something with lines and angle, hence this clip.
You can download it in 1080p HD format from here:
I had to use h264 (but with the best quality it can go to) in order to make it less than 200MB.
If you like this and want more then you can go to the whole archive of lens flares and light leaks here.
They are offered under creative commons. Read more here. If you are super kind and get something out of using these - or use them for commercial projects - then please donate a small amount and I can do some more -